<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 图像区 -->
      <div class="center_box">
        <img src="../assets/yasgui.jpg" alt="超级牙刷" />
      </div>
      <!-- 登录区 -->
      <!-- 用户名 -->
      <el-form :model="loginForm" :rules="loginFormRules" class="login_form" ref="loginFormRef">
        <el-form-item prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username" ></el-input>
        </el-form-item>
      <!-- 密码 -->
        <el-form-item prop="password">
          <el-input prefix-icon="iconfont icon-3702mima" v-model="loginForm.password" show-password></el-input>
        </el-form-item>
      <!-- 按钮区 -->
        <el-form-item  class="btns">
            <el-button type="primary" @click="login">登录</el-button>
              <el-button type="info" @click="rest">重置</el-button>

        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data(){
      return{
        //   绑定登录表单的数据绑定对象
          loginForm:{
              username:'admin',
              password:'123456'
          },
          //表单的验证规则对象
          loginFormRules:{
              //验证用户名是否合法
              username:[
                   { required: true, message: '请输入用户名', trigger: 'blur' },
                   { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                   ],
              //验证密码是否合法
              password:[
                  { required: true, message: '请输入登录密码', trigger: 'blur' },
                  { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
              ]
          }

      }
  },
  methods:{
      rest(){
//    console.log(this);
          this.$refs.loginFormRef.resetFields();//调用element ui里面的重置语法糖，详细请见from表单底部
      },
      login(){
          this.$refs.loginFormRef.validate(async valid => {
            console.log(valid);
              if(!valid) return;
              const t=await this.$http.post("login",this.loginForm)
                   if(t.data.meta.status==200){
                     //console.log('登录成功');
                     this.$message.success("登录成功")
                     //需要将登录后的token保存到sessionstorage中
                     //利用sessionstorage特性使得只在网站打开期间生效
                     window.sessionStorage.setItem("token",t.data.data.token)
                     this.$router.push("/home")
                   }else{
                     //console.log("登录失败");
                     this.$message.error("登录失败")
                     
                   }
          });
      }
     
  }

};
</script>

<style lang="less" scoped>
.login_container {
  position: relative;
  background-color: pink;
  height: 100%;
  text-align: center;
}
.login_box {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  transform: translate(-50%, -50%); /*沿x,y移动自身长度 */

  .center_box {
    position: absolute;
    left: 50%;
    height: 130px;
    width: 130px;
    border: 1px solid #fff;
    border-radius: 50%;
    transform: translate(-50%,-50%);

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
    }
  }
  .login_form{
     position: absolute;
     margin: 0 auto;
     bottom:0;
     width: 100%;
     padding: 0 20px;
     box-sizing: border-box;
  }
  .btns{
      display: flex;
      justify-content: flex-end;
  }
}
</style>